Closure for apertured receptacles



Feb. 23, 1932. P. E. DIEDERICH 1,846,587

CLOSURE FOR APERTURED RECEPTACLES Filed April 25, 1929 Pau/ ,E /'e deff/Ch INVENTOR.

Patented Feb. 1932 NITED I s'rTEs ATEFT; ori-"ics,

PAUL E. DIEDERICH, OF DETROIT, mCHIG-AN, ASSIGNOR TO STANDARD TUBE lAND MANUFACTURING COMPANY, OF DETROIT; MICHIGAN, A CORPORATION OF MICHI- GAN Application iled April 25,

'llhis invention relates to a closure for apertured receptacles and more particularly to a closure `for a filler tube.

ln order to' effect a liquid proof seal between the cap and the filler tube mouth, it is common to interpose between the cap and the mouth a suitable sealing member preferablyV in the form of a deformable gasket of any suitable substance such as rubber. ln the type of closure wherein the cap turns onto the filler tube, this type of gasket, owing to its high-coefficient of friction, sticks either to the cap or to 'the hller tube and consequently is chewed and otherwise worn away with the consequent decrease in its e'ectiveness as a sealingmember. ln order to obviate this undesirable feature of this type of gasket, it is the object of this invention to interpose between the gasket and the cap, a slippage member which will allow the cap to freel rotate relative to the gasket while the cap 1s being turned on without wearing or chewing away the gasket.-

In the drawings:

Fig. 1 is a bottom plan view of the closure partly broken away.

Fig. 2 is a section on the line 2-2 of Fig. l.

Fig. 3 is a section through the ller tube showing the internal cam surfaces.

Fig. 4 is a perspective of the adjusting cup with the struck-,out locking fingers.

Fig. 5 is a top plan view of the adjustable cup viewed as positioned in Fig. 2.

Referring more particularly to the drawings, the filler tube may be designated 1 and has the internal depending flanges 2 with the cam surfaces 3, the shallow notches 17 and the locking finger stops 18. The closure includes the stamped metal cap 4 which has fixed therein the baille 6. The baille 6 has a depending or projecting pilot 7 with the flat sides 8 and rounded sides 8a. A metal disc 9 having a central circular aperture for the pilot 7 is mounted in rotatable relation to the pilot 7 and in slidable relation to the bale 6. 'This disc 1s made of any suitable metal such as steel or copper which will readilyslip or rotate upon the under surface of the metal baille 6. Any suitable lubricant may be fed between the OLOSUBE FOR PERTURED BECEPTACIiES 1929. Serial No. 357,913.

disc and the baille. rlhe rubber gasket 10 has a central circular aperture for the pilot 7 and engages the under surface of the disc 9. The rubber gasket is held in position by the adjustable cup 11 which has struck therein the locking lingers 12 and the lugs 5. ,.'ihe lugs 5 each have a fiatl face 20 and a rounded face 21 the curvature of which is the same as that of the round faces 8 of Jpilot 7 The lugs 5 are fitted with their flat races against the dat faces 8 of the pilotthereby composing with the pilot 7 a cylinder about wh1ch the rubher will readily rotate.

The adjustable cup 11 has a central aperture which conforms with the cross sectional shape of the pilot 7 and hence is in non-rotatable relation with the bame 6 and the cap 4. The adjustable cup 11 is held in position by the coil spring 13 which encircles the pilot 7 and which in turn is held in .position by the spring retainer 14 which is adjustably secured to the pilot 7 by means of the tension adjusting screw 15 which-has a threaded engagement in the pilot.

To secure the cap to the filler tube, the locking ngers 12 are positioned in the recesses 16 and the cap is turned which causes the locking ngers to slidably engage the cam surfaces 3, which engagement draws the cap and gasket 10 downward into tight sealed relation with the filler tube. While the cap is being turned, the coil spring 13 permits the cup 11 to slide up or down on the pilot 7 owing to the sliding engagement of the locking fingerswth the caml surfaces 3 and this eases the increase in tension between the fingers and the cam surfaces sufciently to permit the cap to be turned completely on till the locking fingers engage in the shallow notches 17 and abut against the fin er stops 18.

y .adjustlng the tension screw 15 the pressure with which the locking fingers 12 enbe turned on or off the 511er tube can be adjusted by turning the tension screw 15.

The cam engagement between the locking fingers and the cam surfaces cause the baile 6 to press the gasket 10 into frictional engagement with the mouth of the filler tube. Since the frictional engagement between the baille and the slippage disc 9 is very small compared to the friction between the filler tube and the gasket 10, therefore when the cap is turned on, the gasket 10 will remain in xed relation with the filler tube whereas the baile will rotate upon the slippage disc 9 which slippage disc will be held stationary owing to its frictional engagement with the gasket.

It will be noted that the disc 9 has a smaller diameter than the gasket 10 which permits a portion 22 of the gasket to project beyond the circumference of the disc 9. This circumferential extension 22 of the gasket 10 is not suicient to eifect an appreciable frictional engagement with the bale 6 and serves as a seal to prevent leakage of any of the liquid which may seep through the joint between the pilot 7 and the gasket 9, and thence out through the joints between the gasket, disc, and baiiie.

Some uses require that the closure have air vents. Hence, the tension screw has a bore 27 which opens into the chamber 28 between the bali-le 6 and cap 4. The chamber 28 communicates with the atmosphere through the air vent 29 in the baie 6. This arrangement of vents is such as to render fuel oil losses through the air vents substantially nil. Itis also to be noted that the rubber gasket is entirely insulated from the fuel oil which, as is well known, hastens the deterioration of rubber.

It is evident that there is here produced a closure for a filler tube which may be readily and easily turned into position without chewing away or wearing the gasket.

Claims:

1. A closure for apertured receptacles having in combination, a cap arranged to have a bayonet engagement with said receptacle to close the aperture, means for effecting a seal between the cap and the receptacle, and a thin metal disc interposed between and engaging substantially throughout the disc surface the said cap and the said sealing means which permits the cap to turn while the sealing means remains stationary on the receptacle.

2. A closure for apertured receptacles having in combination, a cap arranged to have a bayonet engagement with the said receptacle to close the aperture, means for initially effecting a seal between the cap and the receptacle, and means for interposinga slippage surface between the said cap and sealing means where the cap presses the sealing means against the receptacle. 

